First Pete Wentz reunites with Ashlee Simpson, and now the famous girl group! Valentine's Day brings everyone back together.

Beyonce - who just attended the Grammys at the Staples Center last night - joined her former musical group Destiny's Child for lunch at Philippe's this afternoon in celebration of Kelly Rowland's (one of the founding members of DC) 30th birthday.

Congrats to Kelly! And how often do we get to see these girls reunite? "Say My Name" and "Survivor" are classics! Check out Beyonce and co. in the vid above...